Aftermarket diff

I know there is kind of a topic like this, but I'd like to have this one for easier reference. Does anyone currently have in the works or have plans to release an aftermarket diff for our RWD stingers? Someone has to know some kind of secret squirrel type shit. I was unable to grab the exact build that I wanted and also have the LSD (Limited Slip Differential). I unfortunately had to settle for the non LSD (Limited Slip Differential). Any info is appreciated!